Chemistry:Oxprenolol

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Short description: Non-selective beta blocker
Oxprenolol
Oxprenolol.svg
Clinical data
AHFS/Drugs.comMicromedex Detailed Consumer Information
Pregnancy
category
  • AU: C
Routes of
administration
By mouth
ATC code
Legal status
Legal status
  • In general: ℞ (Prescription only)
Pharmacokinetic data
Bioavailability20-70%
MetabolismLiver
Elimination half-life1-2hours
ExcretionKidney
Lactic (in lactiferous females)
Identifiers
CAS Number
PubChem CID
IUPHAR/BPS
DrugBank
ChemSpider
UNII
KEGG
ChEMBL
Chemical and physical data
FormulaC15H23NO3
Molar mass265.353 g·mol−1
3D model (JSmol)
ChiralityRacemic mixture
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Oxprenolol (brand names Trasacor, Trasicor, Coretal, Laracor, Slow-Pren, Captol, Corbeton, Slow-Trasicor, Tevacor, Trasitensin, Trasidex) is a non-selective beta blocker with some intrinsic sympathomimetic activity. It is used for the treatment of angina pectoris, abnormal heart rhythms and high blood pressure.

Oxprenolol is a lipophilic beta blocker which passes the blood–brain barrier more easily than water-soluble beta blockers. As such, it is associated with a higher incidence of CNS-related side effects than beta blockers with more hydrophilic molecules such as atenolol, sotalol and nadolol.[1]

Oxprenolol is a potent beta blocker and should not be administered to asthmatics under any circumstances due to their low beta levels as a result of depletion due to other asthma medication, and because it can cause irreversible, often fatal, airway failure and inflammation.[2]

Pharmacology

Pharmacodynamics

Oxprenolol is a beta blocker. In addition, it has been found to act as an antagonist of the serotonin 5-HT1A and 5-HT1B receptors with respective Ki values of 94.2 nM and 642 nM in rat brain tissue.[3]

Chemistry

Stereochemistry

Oxprenolol is a chiral compound, the beta blocker is used as a racemate, e. g. a 1:1 mixture of (R)-(+)-oxprenolol and (S)-(–)-oxprenolol. Analytical methods (HPLC) for the separation and quantification of (R)-(+)-oxprenolol and (S)-(–)-oxprenolol in urine and in pharmaceutical formulations have been described in the literature.[4]

(R)-(+)-Oxprenolol (top) and (S)-(–)-oxprenolol

References

  1. "Comparison of pharmacokinetic properties of beta-adrenoceptor blocking drugs". European Heart Journal. 8 8 Suppl M: 9–14. December 1987. doi:10.1093/eurheartj/8.suppl_M.9. PMID 2897304. 
  2. "Severe asthma after inadvertent ingestion of oxprenolol". Thorax 35 (2): 160. February 1980. doi:10.1136/thx.35.2.160. PMID 7376124. 
  3. "Structural analysis by the comparative molecular field analysis method of the affinity of beta-adrenoreceptor blocking agents for 5-HT1A and 5-HT1B receptors". European Journal of Pharmacology 244 (1): 77–87. January 1993. doi:10.1016/0922-4106(93)90061-d. PMID 8093601. 
  4. "Separation and quantitation of oxprenolol in urine and pharmaceutical formulations by HPLC using a Chiralpak IC and UV detection". Monatshefte für Chemie - Chemical Monthly 143 (3): 365–371. 2011. doi:10.1007/s00706-011-0605-4.